diff --git a/.github/workflows/books-build.yml b/.github/workflows/books-build.yml
index 253af6d..a1f83a6 100644
--- a/.github/workflows/books-build.yml
+++ b/.github/workflows/books-build.yml
@@ -57,7 +57,7 @@ jobs:
           python scripts/forge_all.py --changed-only "${{ steps.base.outputs.base_sha }}"
 
       - name: Upload book artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: books-all
           path: |
diff --git a/.github/workflows/dropzone-build.yml b/.github/workflows/dropzone-build.yml
index 978ca74..31d3b08 100644
--- a/.github/workflows/dropzone-build.yml
+++ b/.github/workflows/dropzone-build.yml
@@ -42,7 +42,7 @@ jobs:
         run: python scripts/bookforge.py
 
       - name: Upload book artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: bookforge-outputs
           path: |